It's pretty far out there.
"Today, two scientists announced evidence that a body nearly the size of Neptune — but as yet unseen — orbits the sun every 15,000 years."
In contrast, Pluto takes only about 250 years to complete an orbit.
Thursday, January 21, 2016
Astronomers say a Neptune-sized planet lurks beyond Pluto
Astronomers say a Neptune-sized planet lurks beyond Pluto
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And what might be hiding behind Uranus?
ReplyDelete(*haw* never gets old.)